It is the expectation of the Occupational Safety and Health Administration (OSHA) that employers maintain a workplace free of hazards that are likely to cause injury or death to employees, including combustible dust deflagration hazards.

In Minas Gerais, OROV has been maintained in silent cycles, probably because of inadequate epidemiologic conditions, such as the high density of Culicoides paraensis mosquitoes in urban areas, a limiting factor for an epidemic cycle deflagration.

s NFPA 68 Standard on Explosion Protection by Deflagration Venting, fiberglass manufacturers and equipment suppliers are bracing for the kind of challenges the industry has faced in the past when adapting to major regulation changes.

In the early '90s, Woosley and Alexei Khokhlov, now at the University of Chicago, independently proposed that a hybrid model, in which a supernova begins as a deflagration and transitions to the more rapid detonation, might be the most likely scenario.

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